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Recommended This Week

Tarn - Sea to Sky Hiking Terms

Tarn                                                                          Sea to Sky Hiking Terms

Tarn: a small alpine lake.  The word tarn originates from the Norse word tjorn which translates to English as pond.  In the United Kingdom, tarn is widely used to refer to any small lake or pond.  In British Columbia however, tarn is used specifically for small mountain lakes.  Around Whistler tarns number in the hundreds and many are so small and/or hidden as to remain unnamed.  Russet Lake in Garibaldi Provincial Park could be called a tarn, however its relatively large size dominates the area and the term lake seems more appropriate.  The nearby Adit Lakes are more accurately called tarns as they are small, shallow and sit in an alpine zone, buried in snow most of the year.

Aerial View of Adit Lakes

Adit Lakes pictured above are characteristic tarns.  Click the image above to see an aerial video of the two Adit Lakes as well as Overlord Glacier, the Fissile and Russet Lake.

Tarn Below Black Tusk

The images above and below are from Panorama RidgePanorama Ridge is easily one of the most amazing hikes in Garibaldi Park.  The 15 kilometre hike from the trailhead at Rubble Creek to Panorama Ridge takes you through beautiful and deep forests, across countless idyllic streams, through meadows filled with flowers, and past dozens of jaw dropping viewpoints.  The amazing views start once you reach Taylor Meadows and get even more spectacular as the trail progresses.

Aerial Video of Panorama Ridge

Once you arrive at Panorama Ridge and its phenomenal vantage point, high above Garibaldi Park, you will stare in wonder.  Mesmerized first by Garibaldi Lake, far below you and looking unnaturally blue, the lake looks amazing surrounded by green, untouched wilderness and snow capped mountains.  Click the image below to see an aerial video of Wedgemount Lake and the little tarn above it.

Wedge Mountain Aerial Video

If you were to search your whole life for an absolutely amazing, astoundingly perfect, alpine hiking paradise, you'd have trouble finding a place as great as Wedgemount Lake in Garibaldi Park. To start with, the lake is breathtaking. Every angle you look at it and every hour of the day it alters its appearance dramatically. From its wonderful turquoise, marble-like appearance reflecting bronze mountains at sunrise and sunset. To its startlingly vivid appearance in the darkness of night. Reflecting stars are as clear looking down on the lake as they are looking up at the sky.

Glossary of Hiking Terms                                    Squamish Hiking Trails

Ablation Zone: the annual loss of snow and ice from a glacier as a result of melting, evaporation, iceberg calving, and sublimation Ablation Zone - Squamish Hiking Termswhich exceeds the accumulation of snow and ice. Located below the firn lineFirn originated from Swiss German and means "last year's snow".  It has been compacted and recrystallized making it harder and more compact than snow, though less compact than glacial ice.  An excellent place to see an ablation zone is Wedgemount Lake in Garibaldi Provincial Park in Whistler.  The Wedgemount Glacier has been receding for decades.  In the 1970's the glacier terminated with a steep and vertical wall of ice at the shores of Wedgemount Lake.  Today the glacier terminates a couple hundred metres above Wedgemount Lake.

Overlord Glacier Ablation Zone

Accumulation Zone: the area where snow accumulations exceeds melt, located above the firn line.  Snowfall accumulates faster than melting, evaporation and sublimation removes it.  Glaciers can be shown simply as having two zones.  The accumulation zone and the ablation zone.  Accumulation Zone - Squamish Hiking TermsSeparated by the glacier equilibrium line, these two zones comprise the areas of net annual gain and net annual loss of snow/ice.  The accumulation zone stretches from the higher elevations and pushes down, eventually reaching the ablation zone near the terminus of the glacier where the net loss of snow/ice exceeds the gain.  The Wedgemount Glacier in Garibaldi Provincial Park in Whistler is an ideal place to see an accumulation zone up close.  From across Wedgemount Lake you can see the overall picture of both the accumulation zone and ablation zone of a glacier.  The Wedgemount Glacier is also relatively easy and safe to examine Aiguille - Squamish Hiking Glossaryclosely and hike onto.  The left side of the glacier is frequented in the summer and fall months by hikers on their way to Wedge Mountain and Mount Weart.

Aiguille: a tall, narrow, characteristically distinct spire of rock. From the French word for "needle". Used extensively as part of the names for many peaks in the French Alps.  Around Whistler in the alpine you will find several distinct aiguilles.  Black Tusk in Garibaldi Provincial Park could be called an aiguille, however its long and prominent history has given it another descriptive term of "tusk".  You will find aiguilles on many hikes in British Columbia.

Alpine Zone or Alpine Tundra: the area above the treeline, often characterized by stunted, sparse forests of krummholz and Alpine Zone - Squamish Hiking Termspristine, turquoise lakes.  The Sproatt alpine is an excellent example of an alpine zone in Whistler.  Dozens of alpine lakes, rugged and rocky terrain and hardy krummholz trees everywhere you look.  The hostile, cold and windy climate in the alpine zones around Whistler make tree growth difficult.  Added to that, the alpine areas are snow covered the majority of the year.  Other good places to explore alpine zones in Whistler are Wedgemount Lake, Blackcomb Mountain, Whistler Mountain, Black Tusk and Callaghan Lake.

Alpine Zone Aerial Video - Squamish Hiking

Arete - Squamish Hiking TermsArête: a thin ridge of rock formed by two glaciers parallel to each other. Sometimes formed from two cirques meeting. From the French for edge or ridge.  Around Whistler and in Garibaldi Provincial Park you will see dozens of excellent examples.  Below Russet Lake in Whistler, the glacier at the bottom of the valley, below the lake has a wonderful example of an arête.  The far side of Mount Price, near Garibaldi Lake also has an enormous arête.  The Wedge-Weart Col beyond Wedgemount Lake is a prominent arête to the summit of Wedge Mountain.

Backshore: the area of the shoreline acted upon by waves only during severe storms.  The West Coast Trail on Vancouver Island Backshore - Squamish Hiking Termsruns for much of its 77 kilometre length along a very distinct backshore route.  Often visible are signs of winter storms that have recently dislodged enormous trees from the rugged coastline.  A backshore can range from as little as a few centimetres high to hundreds of metres high.  The backshore route along the West Coast Trail is often as subtle as a sandy beach edged by a slightly higher border of grass and forest.  Other areas of the trail the backshore is a vertical, solid rock cliff with crashing waves cutting into it far below.

Bar: A ridge of sand or gravel in shallow water built by waves and currents.  Tsusiat Falls along the Bar - Squamish Hiking TermsWest Coast Trail on Vancouver Island has an excellent example of a bar.  An enormous and ever changing sand bar created from the waterfall meeting the Pacific Ocean.  Often this bar is a dozen metres high and 400 metres long as it runs parallel to the ocean before flowing into it.  Similar to a barrier beach, however a bar is more pliable and recent than a barrier beach, which tends to have long-term plant growth on it.

Barrier Beach or Island: a land form parallel to the shoreline, above the normal high water level.  Characteristically linear in shape, a barrier beach extends into a body of water.  In Garibaldi Provincial Park at Garibaldi Lake there is an Barrier Beach - Squamish Hiking Termsexcellent example a barrier beach leading toward the Battleship Islands.  The West Coast Trail has an ever-moving barrier beach at the famous Tsusiat Falls camping area.  The broad falls cascade off a sheer cliff and cut a constantly changing path to the ocean.  The barrier beach can only be reached by a precarious log crossing or by wading across the rushing flow of water.  A barrier island can be quite beautiful.  An excellent example is Sea Lion Haul Out Rock along the West Coast Trail.  This enormous, flat topped, solid rock barrier island sits just a few dozen metres from the trail.  Hundreds of sea lions make their home here and provide a constant show for passing hikers.

Bench - Squamish Hiking TermsBench: a flat section in steep terrain.  Characteristically narrow, flat or gently sloping with steep or vertical slopes on either side.  A bench can be formed by various geological processes.  Natural erosion of a landscape often results in a bench being formed out of a hard strip of rock edged by softer, sedimentary rock.  The softer rock erodes over time, leaving a narrow strip of rock resulting in a bench.  Coastal benches form out of continuous wave erosion of a coastline.  Cutting away at a coastline can result in vertical cliffs dozens or hundreds of metres high with a distinct bench form.  Often a bench takes the form of a long, flat top ridge.  Panorama Ridge in Garibaldi Park is an excellent example of a bench.  The Musical Bumps trail on Whistler Mountain is another good example of bench formations.  Each "bump" along the Musical Bumps trail is effectively a bench.

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